Device for lighting kinematographic projection apparatus by means of sunlight.



S. DOGGETTI. V

DEVICE r011 LIGHTING KINBMATOGRAPHIO PROJECTION APPARATUS BY MEANS OF SUNLIGHT.

APPLIOATIOR FILED NOV. 4, 1912.

Patented Apr. 15, 1913.

3 SHEETS-SHEET 1.

Wanna a0 9 2 COLUMBIA PLANoouAI'II (10.. WAHIIINGTIIN, u.

S. DOCGETTI.

DEVICE FOR LIGHTING KINEMATOGRAPHIG PROJECTION APPARATUS BY MEANS OF SUNLIGHT.

APPLICATION FILED NOVA, 1912.

Patented Apr. 15, 1913.

2 SHEBTBSHBBT 2. Y

n lI-Illlll UNITED STATES T OFFIGE.

SILVIOIDOCCET'II, or oAGLI'AnI, ITALY.

DEVICE FOR LIGHTING? KINEMATOGRAIPHIC PROJECTION APPARATUS BY MEANS OF.

Specification of Letters Patent.

Application filed November 4, 1912. Serial No. 729,413.

To all whom it ma? concern Be 1t known t at I, SILVIQ Dooonr'ri, a

subject of the King of Italy,and residing at 1 l7 Viale Regina Margherita, Cagliari, Italy, have invented certain new and useful; Improvements in Devices for LightingKinematographic Projection Apparatus Means of Sunlight,.of which the following is a specification, reference being had therein to the accompanying drawing.

It has already been proposed to employ the suns light for the projection of kinematograph. pictures, in-order to remove any danger of fire and to permit. of kinematographic representations being made also without a strong artificial luminous source. The automatic or semiautomatic heliostats hitherto known, however,are not adapted for being employedwith kinematographic projections, as the pictureson the films. are

not always arranged incomplete uniformity withrespect to the feedingdevice of: the fillnl and as it is, therefore necessary to permanently ad ust the luminous source, so as to cause the pictures to be projected into the proper place on the projection canvas or plane. c

According to the present lnventlon, the

a, mirror may be moved independently around its two axes of rotationand in a transverse direction of the device with the aid of mechanical transmission gear by means of three hand wheelsfor other manually operated devices, which are arranged in'close proximity with each other on that side of the projection apparatus, where the operator has hisplace, so that the said apparatus and the lighting device ,may be controlled by one and the same operator, who may at any moment and with thegreatest ieaseadjust the rays of light inconformity with the position of the pictures on the film.v The drawingsshow, by wayof example,

one form of construction of the presentdevice.

ing shown in dotted lines. Fig. 5 is a detail.

1 section on the line 5-5, Fig. 5.

The lightingdevice which forms the ob- PatentedaApr. 15,1913.

ject of the present invention, comprises: a

condenser 1,,whose cone-shaped box 4 is carriedby two frames 5 and 6. The mirror 10 1 which projects the sun-rays through the 1 condenser into the kinematographic projection apparatus, may be turned at its base on.

I a horizontal pin 2, mounted in a plate .12. To the rear of the mirror is pivoted a toggle lever 13 whose lower end is pivoted at 13,

to a supporting plate 12, and is formed with f segmental teeth 17. These teeth mesh with.

a worm 16, on a vertical shaft 15, which passes loosely through an opening in the plate 12.. Onthe lower end of the vertical.

shaft 15,is a beveled gear wheel 18, which meshes with a beveled gear wheel 18 splined on a transverse shaft 19. Mounted on. the opposite end of the transverse shaft 19, is a beveled gear wheel20, which meshes with a beveled gear wheel 21, mounted on the outer end of a telescopic, shaft 22, which is mount.- 1 ed in abearing 22", and the frames 5 and 6.

Mounted on the shaft adjacent the frame 5, is a beveled gear wheel 23, which meshes The shaft 25 is mounted in the frame ,5 and may be rotated by means of the hand wheel,

26. By rotating the hand wheel 26 the gearing will operate the vertical shaft :15, and the toggle lever 13, and cause. the mir: ror 10 to tilt on the horizontal pin 2.

On the ,under side of the supporting plate 1 12,. is *fastenedfla :Worm wheel 14, through 1 plate 12, and supporting the worm.,wheel 14, is a base plate 28, formed near its for-m andnear Extending 3 which the shaft? 15 freely passes. Under the ward end with1a pair of ears 38 its rear. end are cars 38.

through the ears 38, is a horizontal shaft 30, and spilled thereon and. confined between the ears 38,is a worm 29, which meshes with the .worm'gear 14. On one end of shaft 30,

is albeveled ear wheel 31, which meshes with a. bevele ear wheel 32, mounted on the outer end 0 a telescopic shaft 33, supported in a bearing 33", and the frames. 5

and 6.

On the telescopic shaft 33, adjacent frame 6, is a worm gear 34, and meshing with same is a worm 35, mounted on: a sleeve 36,

80 with a beveled gear wheel24 on a shaft 25.

supported in a suitable bearing in the frame 6.- The outer free end of the sleeve is provided with a hand wheel 37. a

By rotating the hand wheel 37, the telescopic shaft 33 will be revolved, and through the beveled gears 31 and 32, shaft 30 willfbe 5 rotated. This movement revolves the worm 29, and worm gear 14, hence the supporting plate 12,7and the mirror 10, will be mo-ved on thevertical axis (shaft V The ears 385*, are formed withthreaded Openings which receive afthreaded shaft 41. On one end of the threaded shaft is a beveled gear wheel 42, and meshing with same is a beveled gear wheel 43, carried on the free end of a telescopic shaft 44, mounted in, a bearing44, and in the frames 5 and 6,. I

5 ,On' this telescopic shaft '44, adjacent the frame 6, is a worm gear. 45, which meshes with a worm 46, mountedon a shaft 47, supportedin bearings formed in frame 6.

This jshaft. passes. through the sleeve 36,

and is, provided onits end-with a hand wheel, 48,, located adjacent thehand wheel 37.

When the hand wheel 48, is rotated, shaft 44, is revolved, and through the. beveled gears42 and 43, the threaded shaft 41, is

" operated. The rotation; of shaft 41, will mirror.

V catedfor. convenience on thesideof the kinematographic apparatus where the operator stands to manipulate; the mechanism.

These, hand wheels. arerarranged in close 3 proximity to each other, so that at any momentthe, operatormay tiltthe mirror horizontally, vertically, or move it laterally, so as --.toolo'tainthebest position to direct the suns ,rays through the condenser.

,,What I claimis: 1 f ,7 1.In.:an apparatus ofthe class, described,-

a the cembi aao pr a,frame kinem ktographic mechanism, a condenser "mountdi inf the frame ad acent the kinematographic mech anlsm, a, mirror spaced. from the rear, of

the'condenser, a support for the, mirror, a. verticalpivot for the support, a horizontal pivot between the mirror and the support,

means including gears and atelescopic shaft -v forjoperatingthe vertical pivot to rotatethe mirror-rand, its support, means including gears and a telescopic shaft for tilting'fthe' mirror on the horizontalspivot, and means ing manually 'towardand from the condenser. I e )4. flnganapparatus of the, class described, 3

including gears and a telescopic shaft for moving the'mirror laterally, the telescopic shafts extending between the frame and min ror to permit of the mirror being manually adjusted toward and from the condenser.

2. an apparatus of the class described, 1" the combination of kinematographic mechanlsm, a condenser adjacent the kinemato graphic mechanism, a frame in which, the .condenser is mounted, a mlrror. ad acent'the rear end of the condenser, telescopic shafts mounted in the frame and extendingrearwardly therefrom, a laterallyadjustable base plate mounted between the rear'ends of the telescopicshafts, a vertical shaft mounted in said base plate, a mirror supporting plate loosely mounted on the vertical shaft, Y i

a hinge connection between; said plate and the mirror whereby the mirror may be tiltedl 7 toward and from the condenser, means in 5 eluding gears operated by one of the tele- I scopic shafts to tiltthe mirror toward and p from the condenser, worm gear secured] on the verticalshaft, a worm meshing with] the worm gear, a shaft on which the worm g,

is loosely mounted,gears between the last; named'shaft and oneof the telescopic shafts to operate the wormfand gear to rotate the supporting plate and mirror, a screw} en gaging with the base plate,,and gearsbetween the screw and one tof the telescopic shafts to, operate said screw to laterally adjust the mirror and its support,the tele-' scopic shafts extendingbetween the frame and the mirrorto permit of the" mirror be: longitudinally adjusted toward andfrom the condenser. i s 3. In an apparatus of the class described, a the combination Tofa frame, a condenser mounted in theframe, a supporting plate, a mirror horizontally hinged to the sup-f porting plate, toggle levers pivoted to the rear of the mirror, one ofsald levers being pivoted atits lower end to the supporting plate andformed with teeth, a vertical shaft loosely: mounted in the supporting plate, a worm. gear secured tothe verticalshaft and meshing, with the teeth on the toggle lever, 9

afgea r on the vertical..shaft, a telescopic shaftarranged parallel wi h {the longitudr- 11 nalaXis if of "the ,condenser,..gearsv between the telescopic shaft and'thegear on-the verticalishaft, means for rotatingfthetelescopic shaft wherebylto-tiltthe mirror,fmeans for rotating the supporting plate andthe mir: 12p

ror, andmeans ;=for laterallyadjusting-the mirror, the telescopic shaft extending be tween the frame and the mirror to permit of the mirror being longitudinally adjusted the combinat on of,a,,fran1e,, a condenser mounted inthe frame,1a supporting plate,'a mirror horizontally hinged to the'support ing plate, means between the frame and the mirror including a telescopic shaft for: tilting the mirror onthe hinge, a laterally movable base plate operatively connected iwith the first mentioned plate, means between the frame and the laterally movable base plate including a second telescopic shaft for lat-d erally moving the base plate and the mirror and its supporting;plate, a worm gear connected lto the supporting plate, a worm meshing with the worm gear, hearings on;

- a thir telescopic shaft, gears between the third mentioned telescopic shaft and the shaft on which the wormiis mounted, and means for operating ;the third mentioned telescopic shaft lIOJOtatGithG mlI'IOI', the telescopic shafts permitting ofthe mirror being longitudinally adjusted "toward and from the condenser. b

5. In an apparatus of the class described, a frame, a condenser mounted in the frame, a mirror adjacent the rear end of the condenser, a supporting plate to which themirror is horizontally hinged, a worm gear secured to said supporting plate, a base plate located under the supporting plate, a vertical shaft passin throughboth said lates, 1 means between t e up er end of sai ver tical shaft land the IDII'IOI' to tilt the latter when theshaft is rotated, means includ-l ing gearing: and a telescopic shaft for rotating thevertical shaft, a worm mounted 1 on the baseplate and meshing with the worm gear, means including gears and a tele-1 scopic shaft for rotating the worm, whereby to rotate the su iportingplateand the mirror,ears on the ase plate, said ears having a threaded openings, a screw engaging the threaded 1openings, and means including gears anda telescopic shaft for operating the screw whereby to laterally move the plates and the mirror, the telescopic shafts extending between the frame andthemirror to ermit of the mirror being longitudinally ad usted toward and from the condenser.

In witness whereof I, said SiLvro DocoET'rI, have signed th1s s ecification at Rome, in: the Kingdom of taly, this 22d day; of October, 1912.

SILVIO DOCCETTI.

In the presence of two witnesses- GIOVANNI VALATELLI, G-Us'rAv THADEN;

Copies of this, patent may beobta'ined for live cents each, by addressing the "Commissioner of Patent Washington, 11.0.? 

